'\" te
.\"  Copyright (c) 1997 Sun Microsystems, Inc.  All Rights Reserved.
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.TH OPTISA 1 "Jul 25, 1997"
.SH NAME
optisa \- determine which variant instruction set is optimal to use
.SH SYNOPSIS
.LP
.nf
\fBoptisa\fR \fIinstruction_set\fR...
.fi

.SH DESCRIPTION
.sp
.LP
\fBoptisa\fR prints which  \fIinstruction_set\fR out of the ones specified in
the command will perform best on  this machine.  In this case, ``best'' is
defined by the order  in which instruction set names are returned by
\fBisalist\fR(1). Possible values for \fIinstruction_set\fR are given in
\fBisalist\fR(7).
.SH EXIT STATUS
.sp
.LP
The following exit values are returned:
.sp
.ne 2
.na
\fB\fB0\fR\fR
.ad
.RS 5n
One of the  \fIinstruction_set\fR values you specified is printed by this
command.
.RE

.sp
.ne 2
.na
\fB\fB1\fR\fR
.ad
.RS 5n
There is no output; that is, this machine cannot use any  \fIinstruction_set\fR
that you specified with the \fBoptisa\fR command.
.RE

.SH SEE ALSO
.sp
.LP
.BR isalist (1),
.BR uname (1),
.BR attributes (7),
.BR isalist (7)
.SH NOTES
.sp
.LP
\fBoptisa\fR is preferable to  \fBuname\fR \fB-p\fR or  \fBuname\fR \fB-m\fR
(see \fBuname\fR(1)) in determining which of several binary versions of a given
program  should be used on the given machine.
